Our middle school SeaPerch team members met at an outdoor pool to test and practice driving their robots. Their vehicles were designed and built by the youth. They were proud.
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Our team meeting brought more progress on our three robots. One team continued to work on their X-drive omni wheel chassis. They hadn't put all the screws in the gussets which support the angles on the chassis. It was hard, slow work to get those last screws in, but if they didn't put them in, the wheels would not have been in an X shape and it wouldn't have worked properly. Our other team building a chassis with the same design continued working to stabilize the chassis and also working on powering the linear life. The team building the scissor lift robot worked to get the spacing of the wheels and gears on the chassis just right, and also worked on completing on side of the scissor lift. One motor was installed in the turntable used to power the scissor lift, and it was not able to lift. Elastic bands and another motor are the suggested solutions to that problem.
Two of our teams decided to build a chassis with an Omni wheel X drive. The means the four wheels are special wheels called Omni wheels, and the ones across from each other are parallel, while the ones beside each other are at 90 degrees. Robots with this design can move in any direction and at any angle. One of our teams has completed their X Drive chassis including the rather complex programming. They drove it for the first time last night and were so proud. Our three teams are making progress on their robots. Two teams have decided to go with an X-drive for their chassis, and one team is building a U shaped drive with seven wheels, five of them omni-wheels. Two of our teams are using the linear lift system for getting height, which is very important in this year's VEX game, Skyrise. One of our teams is going for a scissor lift and they are having a great time building it. The teams who are building the X-drive tried one design that they weren't happy with, because they didn't feel it was easy to get enough stability. Good progress on the scissor lift! The linear lift also works. |
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September 2016
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